JWT Decoder
JWT Decoder Optimized for Privacy
Decode JSON Web Tokens locally without sending sensitive data online. Essential for developers, testers, and security checks.
Header
Payload
Security Note
This decoder runs entirely in your browser. Your tokens are never sent to any server. We process the Base64 segments locally using your device's resources.
How to Convert a JWT file?
Click the "Choose Files" button to select your JWT files.
Then select a target format and click the "Convert" button.
Once the conversion finishes, click the "Download" button to save the file.
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JWT Decoder Online – Decode JSON Web Tokens Free
Decode and analyze JWT tokens online. Free JWT decoder for developers to inspect token headers, payloads, and signatures.
What It Does
A JWT decoder parses JSON Web Tokens to reveal header, payload, and signature information for debugging and analysis.
Why It Matters
JWT tokens are widely used for authentication and authorization, making token inspection essential for debugging and security analysis.
How It Works
The tool decodes Base64-encoded JWT sections and displays the JSON content in a readable format.
Perfect For
- API authentication debugging
- Token validation and inspection
- Security analysis and auditing
- OAuth and SSO troubleshooting
- Learning JWT token structure
How to Decode JWT Tokens
- 1Paste your JWT token into the decoder
- 2View the decoded header information
- 3Inspect the payload data
- 4Analyze token expiration and claims
Key Benefits
- Complete JWT token analysis
- Header and payload inspection
- Expiration time validation
- Claims and scope analysis
- No token storage or logging
- Developer-friendly interface
Technical Features
- 100% client-side processing for maximum privacy
- No file uploads or server storage required
- Fast processing using modern web technologies
- Works on all devices and operating systems
The JWT Decoder provides essential token analysis capabilities for developers working with authentication systems.
Related Terms & Tags
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